Execute "Testrun - Danfoss VLT 5000 Series Manual

I I I I I "EXECUTE TESTRUN"
Before starting a testrun: Safety notes
Move the drive to the starting position, it is impor-
tant to do this before you open the test window.
NB!
While optimizing the controller with the
function "TESTRUN" the drive is automatically
returned to the starting position after reaching the
target position.
If run in reverse is not allowed, then the REVERS
(63) parameter must be set to "no reversing = 2".
Click on "CONTROLLER" → → → → → "PARAMETERS" → → → → →
"AXIS" and change the setting in the parameter
PID Contr PID Contr oller oller
group PID Contr PID Contr PID Controller oller. oller
NB!
Make sure that any and all brakes are relea-
sed and that there are not any obstacles in
the positioning path.
NB!
Improperly adjusted control parameters
can cause the motor and the mechanism
to be damaged. For this reason never optimize
controls without having an EMERGENCY STOP
button.
Starting the Testrun
Click on "ETESTRUN" → "EXECUTE TESTRUN"
and the dialog field with the test run parameters is
opened. The test run parameters last saved and
the current axis parameters are already entered
here:
Begin the test series with 'stable' control parame-
ters: If the standard set control parameters cause
the drive to vibrate heavily in the starting position,
select a low Proportional Proportional and Derivative factor Proportional Proportional Proportional
(ca. 20) and set the integral factor to zero. Then,
starting from these values, optimize the controller.
52
Derivative factor Derivative factor Derivative factor Derivative factor
VLT ® 5000 SyncPos option
If it is at all possible you should optimize the con-
troller first with the motor and the drive until the
readings are no longer in the critical range. Then
connect the mechanical load and complete the
fine optimization.
Click on "START": The test run is executed, the
current position values, etc. are saved and, at the
end of the test run, transferred to the computer for
evaluation.
NB!
Observe the behavior and temperature of the
motor: if there are strong vibrations or an
excessive increase in the motor temperature the
motion process must be aborted prematurely with
the EMERGENCY STOP button and different control
parameters must be selected.
After making an EMERGENCY STOP you must
move the drive back to the starting position before
making another test run. Reduce the proportional
factor, and if necessary also the derivative factor,
before starting the next test run or measurement.
After the measurement is complete all measure-
ment data is automatically transferred to the com-
puter and, during this process, the drive returns to
the starting position at a reduced velocity. The
figures are plotted automatically.
The dialog field for the test run parameters is
opened with "REPEAT".
Saving and loading test run parameters
Click on "SAVE", to save the test run parameters in
the VLT. If, during additional test runs, you receive
poorer control results then you can "LOAD" the
parameters previously used again.
MG.10.J4.02 – VLT is a registered Danfoss trade mark